Mandible guard



FIG. 1 is a top, front, right side perspective view of a mandible guard showing our new design;

FIG. 2 is a front elevation view thereof;

FIG. 3 is a rear elevation view thereof;

FIG. 4 is a left side elevation view thereof;

FIG. 5 is a right side elevation view thereof;

FIG. 6 is a top plan view thereof; and,

FIG. 7 is a bottom plan view thereof.

The broken lines illustrate portions of the mandible guard that form no part of the claimed design. The surface area between the left-side inner broken lines and the adjacent left-side slanted solid line quadrilateral in FIGS. 1, 2 and 4-7 forms no part of the claimed design. The surface area between the right-side inner broken lines and the adjacent right-side slanted solid line quadrilateral in FIGS. 1, 2 and 4-7 forms no part of the claimed design. 

CLAIM The ornamental design for a mandible guard, as shown and described. 